Jet Elite EVC-400DGSP, Руководство пользователя

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14
12.0 Troubleshooting
Problem Possible Cause Correction *
Teeth breaking
Incorrect oil mist
lubrication Ensure proper oil mist concentration and supply.
Material too hard
Check the feed speed and air pressure parameters
and the type of blade you are using.
Saw blade not worn-in
correctly
With a new blade it is necessary to start cutting at
half feeding speed. After the wearing--in period (a
cutting surface of about 300 cm
2
for hard materials
and about 1000 cm
2
for soft materials) the cutting
and feed speeds can be brought up to normal values
Saw blade with excessively
fine tooth pitch
Cutting chips wedge into the bottom of the teeth
causing excessive pressure on the teeth.
Use saw blade with coarser teeth
New blade inserted in a
partially completed cut
The surface of the cut may have undergone work hardening.
A tooth from the old blade may be left in the cut.
Inspect workpiece before cutting.
Work piece not clamped
firmly in place
Any movement of the work piece during cutting can
cause broken teeth.
Check workpiece support on fence and table, Check
workpiece clamping.
Check compressed air supply
Rapid tooth wear
Feed speed too slow
Blade teeth scratch over the material without
removing material
Increase up-stroke speed.
Feed speed too high
Cutting pressure too high.
Reduce up-stroke speed.
Insufficient coolant oil
Check the coolant level and clean coolant lines and
nozzles.
Incorrect oil mist
lubrication Ensure proper oil mist concentration and supply.
Material defective
The materials may present altered zones either on
the surface, such as oxides or sand, or included, such
as under-cooled inclusions. These zones, which are
much harder than the blade, cause the teeth to
wear quickly or to break.
Discard or clean these materials.
* WARNING: Some corrections may require a qualified electrician.
Table 1